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proxmox-backup/src/pxar/flags.rs

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pxar: cleanup: move feature flags to src/pxar/flags.rs and omit CA_FORMAT prefix on all of them Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
2019-08-02 13:19:33 +00:00
//! Feature flags for *pxar* allow to control what is stored/restored in/from the
//! archive.
//! Flags for known supported features for a given filesystem can be derived
//! from the superblocks magic number.
/// FAT-style 2s time granularity
pub const WITH_2SEC_TIME: u64 = 0x40;
/// Preserve read only flag of files
pub const WITH_READ_ONLY: u64 = 0x80;
/// Preserve unix permissions
pub const WITH_PERMISSIONS: u64 = 0x100;
/// Include symbolik links
pub const WITH_SYMLINKS: u64 = 0x200;
/// Include device nodes
pub const WITH_DEVICE_NODES: u64 = 0x400;
/// Include FIFOs
pub const WITH_FIFOS: u64 = 0x800;
/// Include Sockets
pub const WITH_SOCKETS: u64 = 0x1000;
/// Preserve DOS file flag `HIDDEN`
pub const WITH_FLAG_HIDDEN: u64 = 0x2000;
/// Preserve DOS file flag `SYSTEM`
pub const WITH_FLAG_SYSTEM: u64 = 0x4000;
/// Preserve DOS file flag `ARCHIVE`
pub const WITH_FLAG_ARCHIVE: u64 = 0x8000;
// chattr() flags
/// Linux file attribute `APPEND`
pub const WITH_FLAG_APPEND: u64 = 0x10000;
/// Linux file attribute `NOATIME`
pub const WITH_FLAG_NOATIME: u64 = 0x20000;
/// Linux file attribute `COMPR`
pub const WITH_FLAG_COMPR: u64 = 0x40000;
/// Linux file attribute `NOCOW`
pub const WITH_FLAG_NOCOW: u64 = 0x80000;
/// Linux file attribute `NODUMP`
avoid some clippy warnings
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pub const WITH_FLAG_NODUMP: u64 = 0x0010_0000;
pxar: cleanup: move feature flags to src/pxar/flags.rs and omit CA_FORMAT prefix on all of them Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
2019-08-02 13:19:33 +00:00
/// Linux file attribute `DIRSYNC`
avoid some clippy warnings
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pub const WITH_FLAG_DIRSYNC: u64 = 0x0020_0000;
pxar: cleanup: move feature flags to src/pxar/flags.rs and omit CA_FORMAT prefix on all of them Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
2019-08-02 13:19:33 +00:00
/// Linux file attribute `IMMUTABLE`
avoid some clippy warnings
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pub const WITH_FLAG_IMMUTABLE: u64 = 0x0040_0000;
pxar: cleanup: move feature flags to src/pxar/flags.rs and omit CA_FORMAT prefix on all of them Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
2019-08-02 13:19:33 +00:00
/// Linux file attribute `SYNC`
avoid some clippy warnings
2019-10-25 16:44:51 +00:00
pub const WITH_FLAG_SYNC: u64 = 0x0080_0000;
pxar: cleanup: move feature flags to src/pxar/flags.rs and omit CA_FORMAT prefix on all of them Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
2019-08-02 13:19:33 +00:00
/// Linux file attribute `NOCOMP`
avoid some clippy warnings
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pub const WITH_FLAG_NOCOMP: u64 = 0x0100_0000;
pxar: cleanup: move feature flags to src/pxar/flags.rs and omit CA_FORMAT prefix on all of them Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
2019-08-02 13:19:33 +00:00
/// Linux file attribute `PROJINHERIT`
avoid some clippy warnings
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pub const WITH_FLAG_PROJINHERIT: u64 = 0x0200_0000;
pxar: cleanup: move feature flags to src/pxar/flags.rs and omit CA_FORMAT prefix on all of them Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
2019-08-02 13:19:33 +00:00
/// Preserve BTRFS subvolume flag
avoid some clippy warnings
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pub const WITH_SUBVOLUME: u64 = 0x0400_0000;
pxar: cleanup: move feature flags to src/pxar/flags.rs and omit CA_FORMAT prefix on all of them Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
2019-08-02 13:19:33 +00:00
/// Preserve BTRFS read-only subvolume flag
avoid some clippy warnings
2019-10-25 16:44:51 +00:00
pub const WITH_SUBVOLUME_RO: u64 = 0x0800_0000;
pxar: cleanup: move feature flags to src/pxar/flags.rs and omit CA_FORMAT prefix on all of them Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
2019-08-02 13:19:33 +00:00
/// Preserve Extended Attribute metadata
avoid some clippy warnings
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pub const WITH_XATTRS: u64 = 0x1000_0000;
pxar: cleanup: move feature flags to src/pxar/flags.rs and omit CA_FORMAT prefix on all of them Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
2019-08-02 13:19:33 +00:00
/// Preserve Access Control List metadata
avoid some clippy warnings
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pub const WITH_ACL: u64 = 0x2000_0000;
pxar: cleanup: move feature flags to src/pxar/flags.rs and omit CA_FORMAT prefix on all of them Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
2019-08-02 13:19:33 +00:00
/// Preserve SELinux security context
avoid some clippy warnings
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pub const WITH_SELINUX: u64 = 0x4000_0000;
pxar: cleanup: move feature flags to src/pxar/flags.rs and omit CA_FORMAT prefix on all of them Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
2019-08-02 13:19:33 +00:00
/// Preserve "security.capability" xattr
avoid some clippy warnings
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pub const WITH_FCAPS: u64 = 0x8000_0000;
pxar: cleanup: move feature flags to src/pxar/flags.rs and omit CA_FORMAT prefix on all of them Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
2019-08-02 13:19:33 +00:00
/// Preserve XFS/ext4/ZFS project quota ID
avoid some clippy warnings
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pub const WITH_QUOTA_PROJID: u64 = 0x0001_0000_0000;
pxar: cleanup: move feature flags to src/pxar/flags.rs and omit CA_FORMAT prefix on all of them Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
2019-08-02 13:19:33 +00:00
/// Support ".pxarexclude" files
avoid some clippy warnings
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pub const EXCLUDE_FILE: u64 = 0x1000_0000_0000_0000;
pxar: cleanup: move feature flags to src/pxar/flags.rs and omit CA_FORMAT prefix on all of them Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
2019-08-02 13:19:33 +00:00
/// Exclude submounts
avoid some clippy warnings
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pub const EXCLUDE_SUBMOUNTS: u64 = 0x4000_0000_0000_0000;
pxar: cleanup: move feature flags to src/pxar/flags.rs and omit CA_FORMAT prefix on all of them Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
2019-08-02 13:19:33 +00:00
/// Exclude entries with chattr flag NODUMP
avoid some clippy warnings
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pub const EXCLUDE_NODUMP: u64 = 0x8000_0000_0000_0000;
pxar: cleanup: move feature flags to src/pxar/flags.rs and omit CA_FORMAT prefix on all of them Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
2019-08-02 13:19:33 +00:00
/// Definitions of typical feature flags for the *pxar* encoder/decoder.
/// By this expensive syscalls for unsupported features are avoided.
/// All chattr file attributes
pub const WITH_CHATTR: u64 =
WITH_FLAG_APPEND|
WITH_FLAG_NOATIME|
WITH_FLAG_COMPR|
WITH_FLAG_NOCOW|
WITH_FLAG_NODUMP|
WITH_FLAG_DIRSYNC|
WITH_FLAG_IMMUTABLE|
WITH_FLAG_SYNC|
WITH_FLAG_NOCOMP|
WITH_FLAG_PROJINHERIT;
/// All FAT file attributes
pub const WITH_FAT_ATTRS: u64 =
WITH_FLAG_HIDDEN|
WITH_FLAG_SYSTEM|
WITH_FLAG_ARCHIVE;
/// All bits that may also be exposed via fuse
pub const WITH_FUSE: u64 =
WITH_2SEC_TIME|
WITH_READ_ONLY|
WITH_PERMISSIONS|
WITH_SYMLINKS|
WITH_DEVICE_NODES|
WITH_FIFOS|
WITH_SOCKETS|
WITH_FAT_ATTRS|
WITH_CHATTR|
WITH_XATTRS;
/// Default feature flags for encoder/decoder
pub const DEFAULT: u64 =
WITH_SYMLINKS|
WITH_DEVICE_NODES|
WITH_FIFOS|
WITH_SOCKETS|
WITH_FLAG_HIDDEN|
WITH_FLAG_SYSTEM|
WITH_FLAG_ARCHIVE|
WITH_FLAG_APPEND|
WITH_FLAG_NOATIME|
WITH_FLAG_COMPR|
WITH_FLAG_NOCOW|
//WITH_FLAG_NODUMP|
WITH_FLAG_DIRSYNC|
WITH_FLAG_IMMUTABLE|
WITH_FLAG_SYNC|
WITH_FLAG_NOCOMP|
WITH_FLAG_PROJINHERIT|
WITH_SUBVOLUME|
WITH_SUBVOLUME_RO|
WITH_XATTRS|
WITH_ACL|
WITH_SELINUX|
WITH_FCAPS|
WITH_QUOTA_PROJID|
EXCLUDE_NODUMP|
pxar: remove flag to change digest algorithm The flag CA_FORMAT_SHA512_256 is used to switch between sha512 and sha256 to calculate digest in casync. As we use sha256, we can get rid of this flag for now. Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
2019-08-02 15:43:25 +00:00
EXCLUDE_FILE;
pxar: cleanup: move feature flags to src/pxar/flags.rs and omit CA_FORMAT prefix on all of them Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
2019-08-02 13:19:33 +00:00
// form /usr/include/linux/fs.h
avoid some clippy warnings
2019-10-25 16:44:51 +00:00
const FS_APPEND_FL: u32 = 0x0000_0020;
const FS_NOATIME_FL: u32 = 0x0000_0080;
const FS_COMPR_FL: u32 = 0x0000_0004;
const FS_NOCOW_FL: u32 = 0x0080_0000;
const FS_NODUMP_FL: u32 = 0x0000_0040;
const FS_DIRSYNC_FL: u32 = 0x0001_0000;
const FS_IMMUTABLE_FL: u32 = 0x0000_0010;
const FS_SYNC_FL: u32 = 0x0000_0008;
const FS_NOCOMP_FL: u32 = 0x0000_0400;
const FS_PROJINHERIT_FL: u32 = 0x2000_0000;
pxar: cleanup: move feature flags to src/pxar/flags.rs and omit CA_FORMAT prefix on all of them Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
2019-08-02 13:19:33 +00:00
static CHATTR_MAP: [(u64, u32); 10] = [
( WITH_FLAG_APPEND, FS_APPEND_FL ),
( WITH_FLAG_NOATIME, FS_NOATIME_FL ),
( WITH_FLAG_COMPR, FS_COMPR_FL ),
( WITH_FLAG_NOCOW, FS_NOCOW_FL ),
( WITH_FLAG_NODUMP, FS_NODUMP_FL ),
( WITH_FLAG_DIRSYNC, FS_DIRSYNC_FL ),
( WITH_FLAG_IMMUTABLE, FS_IMMUTABLE_FL ),
( WITH_FLAG_SYNC, FS_SYNC_FL ),
( WITH_FLAG_NOCOMP, FS_NOCOMP_FL ),
( WITH_FLAG_PROJINHERIT, FS_PROJINHERIT_FL ),
];
pub fn feature_flags_from_chattr(attr: u32) -> u64 {
let mut flags = 0u64;
for (fe_flag, fs_flag) in &CHATTR_MAP {
if (attr & fs_flag) != 0 { flags = flags | fe_flag; }
}
flags
}
// from /usr/include/linux/msdos_fs.h
const ATTR_HIDDEN: u32 = 2;
const ATTR_SYS: u32 = 4;
const ATTR_ARCH: u32 = 32;
static FAT_ATTR_MAP: [(u64, u32); 3] = [
( WITH_FLAG_HIDDEN, ATTR_HIDDEN ),
( WITH_FLAG_SYSTEM, ATTR_SYS ),
( WITH_FLAG_ARCHIVE, ATTR_ARCH ),
];
pub fn feature_flags_from_fat_attr(attr: u32) -> u64 {
let mut flags = 0u64;
for (fe_flag, fs_flag) in &FAT_ATTR_MAP {
if (attr & fs_flag) != 0 { flags = flags | fe_flag; }
}
flags
}
/// Return the supported *pxar* feature flags based on the magic number of the filesystem.
pub fn feature_flags_from_magic(magic: i64) -> u64 {
use new proxmox::sys::linux::magic
2019-08-03 07:28:57 +00:00
use proxmox::sys::linux::magic::*;
pxar: cleanup: move feature flags to src/pxar/flags.rs and omit CA_FORMAT prefix on all of them Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
2019-08-02 13:19:33 +00:00
match magic {
MSDOS_SUPER_MAGIC => {
WITH_2SEC_TIME|
WITH_READ_ONLY|
WITH_FAT_ATTRS
},
EXT4_SUPER_MAGIC => {
WITH_2SEC_TIME|
WITH_READ_ONLY|
WITH_PERMISSIONS|
WITH_SYMLINKS|
WITH_DEVICE_NODES|
WITH_FIFOS|
WITH_SOCKETS|
WITH_FLAG_APPEND|
WITH_FLAG_NOATIME|
WITH_FLAG_NODUMP|
WITH_FLAG_DIRSYNC|
WITH_FLAG_IMMUTABLE|
WITH_FLAG_SYNC|
WITH_XATTRS|
WITH_ACL|
WITH_SELINUX|
WITH_FCAPS|
WITH_QUOTA_PROJID
},
XFS_SUPER_MAGIC => {
WITH_2SEC_TIME|
WITH_READ_ONLY|
WITH_PERMISSIONS|
WITH_SYMLINKS|
WITH_DEVICE_NODES|
WITH_FIFOS|
WITH_SOCKETS|
WITH_FLAG_APPEND|
WITH_FLAG_NOATIME|
WITH_FLAG_NODUMP|
WITH_FLAG_IMMUTABLE|
WITH_FLAG_SYNC|
WITH_XATTRS|
WITH_ACL|
WITH_SELINUX|
WITH_FCAPS|
WITH_QUOTA_PROJID
},
ZFS_SUPER_MAGIC => {
WITH_2SEC_TIME|
WITH_READ_ONLY|
WITH_PERMISSIONS|
WITH_SYMLINKS|
WITH_DEVICE_NODES|
WITH_FIFOS|
WITH_SOCKETS|
WITH_FLAG_APPEND|
WITH_FLAG_NOATIME|
WITH_FLAG_NODUMP|
WITH_FLAG_DIRSYNC|
WITH_FLAG_IMMUTABLE|
WITH_FLAG_SYNC|
WITH_XATTRS|
WITH_ACL|
WITH_SELINUX|
WITH_FCAPS|
WITH_QUOTA_PROJID
},
BTRFS_SUPER_MAGIC => {
WITH_2SEC_TIME|
WITH_READ_ONLY|
WITH_PERMISSIONS|
WITH_SYMLINKS|
WITH_DEVICE_NODES|
WITH_FIFOS|
WITH_SOCKETS|
WITH_FLAG_APPEND|
WITH_FLAG_NOATIME|
WITH_FLAG_COMPR|
WITH_FLAG_NOCOW|
WITH_FLAG_NODUMP|
WITH_FLAG_DIRSYNC|
WITH_FLAG_IMMUTABLE|
WITH_FLAG_SYNC|
WITH_FLAG_NOCOMP|
WITH_XATTRS|
WITH_ACL|
WITH_SELINUX|
WITH_SUBVOLUME|
WITH_SUBVOLUME_RO|
WITH_FCAPS
},
TMPFS_MAGIC => {
WITH_2SEC_TIME|
WITH_READ_ONLY|
WITH_PERMISSIONS|
WITH_SYMLINKS|
WITH_DEVICE_NODES|
WITH_FIFOS|
WITH_SOCKETS|
WITH_ACL|
WITH_SELINUX
},
// FUSE mounts are special as the supported feature set
// is not clear a priori.
FUSE_SUPER_MAGIC => {
WITH_FUSE
},
_ => {
WITH_2SEC_TIME|
WITH_READ_ONLY|
WITH_PERMISSIONS|
WITH_SYMLINKS|
WITH_DEVICE_NODES|
WITH_FIFOS|
WITH_SOCKETS
},
}
}